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  • Title: Tunable single-frequency diode laser at wavelength lambda = 1.645 microm for methane concentration measurements.
    Author: Gladyshev AV, Belovolov MI, Vasiliev SA, Dianov EM, Medvedkov OI, Nadezhdinskii AI, Ershov OV, Beresin AG, Duraev VP, Nedelin ET.
    Journal: Spectrochim Acta A Mol Biomol Spectrosc; 2004 Dec; 60(14):3337-40. PubMed ID: 15561617.
    Abstract:
    This paper deals with the development of a novel single-frequency tunable diode laser with fiber-optic output for gas-analysis applications. The approach we propose is a convenient, simple and cheap solution for spectroscopy of single absorption lines of any gases having absorption bands in the optical fiber transparency window (0.7 microm/1.7 microm). The presence of fiber-optic output is an additional advantage for remote sensing applications. The laser operation is demonstrated as applied to R7 line of 2 nu(3) methane absorption band at lambda = 1.645 microm. The mode-hop-free tuning range of 35 GHz (1.2 cm(-1)) has been achieved.
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